Description
SOBO WP-308H Hanging Filter
The SOBO WP-308H is a compact, efficient, and affordable hang-on-back (HOB) filter designed for small to medium-sized aquariums (~150). It offers powerful filtration, simple installation, and quiet performance, making it a great choice for beginner and intermediate hobbyists.
🌊 Key Features
✅ 3-Stage Filtration – Equipped with filter sponge (mechanical), activated carbon (chemical), and space for ceramic rings (biological). Keeps water clean, clear, and toxin-free.
✅ Adjustable Flow Rate – Gentle setting for shrimp or Betta tanks, higher flow for community aquariums.
✅ Surface Skimmer – Built-in skimmer removes oil film, dust, and dirt from the water surface.
✅ Silent Operation – Low noise and vibration, perfect for bedrooms or living rooms.
✅ Easy Setup & Maintenance – Quick access to filter media, simple sponge rinsing, and reusable media.
✅ Compact Design – Slim profile, hangs neatly at the back of the tank without taking much space.
🐠 Suitable For
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Tank Size: ~150L.
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Fish Types: Tetras, Guppies, Mollies, Platies, Swordtails, Bettas, Gouramis, Dwarf Cichlids, Shrimp & Snails.
⚠️ Not recommended for very large or messy fish like Goldfish, Oscars, or Arowana (unless used as an additional filter).
⚙️ Specifications
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Model: WP-308H
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Type: Hang-on-back filter
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Flow Rate: 580 L/H
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Tank Capacity: ~150L
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Power Consumption: 5.8W (energy-efficient)
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Filter Media Included: Sponge + Activated Carbon Cartridge
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Upgradable Media: Ceramic rings, bio-balls, fine filter wool
🧱 Filter Media Setup (Recommended Order)
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Coarse Sponge (mechanical filtration)
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Activated Carbon Cartridge (chemical filtration)
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Ceramic Rings / Bio-balls (biological filtration upgrade)
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Fine Filter Wool (optional for crystal-clear finish)
👉 For shrimp tanks, attach a sponge pre-filter on the intake.
🔧 How to Install
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Hang the filter on the back/side of the aquarium.
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Place the intake pipe inside the tank and attach the surface skimmer (if needed).
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Fill the filter chamber with tank water to help priming.
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Plug in and switch ON – water starts circulating automatically.
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Adjust flow rate to suit fish needs.
🧼 Maintenance
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Rinse sponge every 2–3 weeks in tank water (not tap water).
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Replace activated carbon every 3–4 weeks if used.
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Clean ceramic rings gently when clogged (never replace all at once).
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Check skimmer & inlet pipe for blockages.
📦 What’s in the Box
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SOBO WP-308H filter body
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Sponge & Activated Carbon Cartridge (pre-installed)
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Intake pipe with fittings & skimmer
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Adjustable flow control
✅ Why Choose SOBO WP-308H?
The SOBO WP-308H Hanging Filter is an excellent budget-friendly option for aquarists looking for reliable filtration. With multi-stage filtering, a built-in skimmer, and low noise operation, it ensures cleaner, healthier water for your aquarium with minimal effort.
👉 Best for community fish tanks, shrimp tanks, and planted aquariums(~ 150 L).



